The double of a number plus 12 is equal to its triple minus 5. What is the number? [tex]2x + 12 = 3x - 5[/tex] if I'm not wrong

Answers

Answer 1

Hi there!  

»»————- ★ ————-««

I believe your answer is:  

17

»»————- ★ ————-««  

Here’s why:  

⸻⸻⸻⸻

[tex]\boxed{\text{Solving for 'x'...}}\\\\2x + 12 = 3x - 5\\--------------\\\rightarrow 2x + 12 - 12 = 3x - 5 - 12\\\\\rightarrow 2x = 3x -17 \\\\\rightarrow2x -3x = 3x-3x - 17\\\\\rightarrow -x = - 17\\\\\rightarrow \frac{-x=-17}{-1} \\\\\rightarrow \boxed{x = 17}[/tex]

⸻⸻⸻⸻

»»————- ★ ————-««  

Hope this helps you. I apologize if it’s incorrect.  


Related Questions

Can somebody do this please I don’t know how and I just need the credit

Answers

Answer:

7. M = (-1.5,7)

8. (8,4)

9. m<QRS=46°

Step-by-step explanation:

7. Use the midpoint formula which is (x1+x2/2 , y1+y2/2)

So (-1-2/2 , 9+5/2)

(-3/2 , 14/2)

So M = (-1.5,7)

8. This is one simple if you understand.

Since (-6,6) is the starting end point and (1,5) is the mid point then (8,4) has to be the other end point. -6 to 1 is +7. 1 to 8 is +7. 6 to 5 is -1. 5 to 4 is -1.

9. 3x-8+2x+6=98

5x-2=98

5x=100

x=20

So plug in x for QRS

2(20)+6

40+6

46

Hope this helps

Factor this expression
3x^2-11x-20

Answers

Answer:

(3x-4)(x+5)

Step-by-step explanation: First set up a diamond problem. Find what two numbers add to 60 since 3*20 and add to -11. That would be 15 and -4. Then draw a 2x2 box, and put in 3x^2 the -20, 15x and -4x. Then find the factors. Hope that helped! :)

Answer:

(3x+4)(x-5)

Step-by-step explanation:

When we analyze the relationships between different quantities, identify their units of measurement, and convert these quantities for equal comparison, we are using dimensional analysis. Dimensional analysis uses a or conversion factor, to change units of measurement while maintaining the value of the measurement. In a conversion factor, the numerator and equal the same amount, just in different For example, to convert 3 miles into feet, you would 3 miles by a conversion factor created from the units of miles and feet. Because 1 mile equals 5,280 feet, two conversion factors can be created:1 mile or 5,280 feet/1 mileMultiplying any number, such as 3 miles, by either of these does not change the number's over value. To determine which conversion factor we use, we place the unit we do want in the bottom, while we put the unit we want to get rid of on th

Answers

The steps involved in using dimensional analysis for unit conversion is highlighted below :

The question is incomplete, however, from the portion given, we can see that the text is based on using dimensional analysis to convert units of measurement.

We relate our given unit to the desired or expected unit :

From the text:

To convert 3 miles into feets :

The given unit = 3 miles

The expected or desired unit = feets

The relationship between Given and desired unit :

1 mile = 5280 feets

(5280 feets / 1 mile )

With the unit we want or desire placed at the bottom

To convert a given number of miles to feets ;

Multiply the given value by the relation defined :

Hence,

3 miles to feets :

3 miles × (5280 feets / 1 mile)

Miles cancels out

3 × 5280 feets = 15,840 feets

Another example :

Convert ; 10 minutes into seconds :

1 minute = 60 seconds

given unit = minute ; desired unit = seconds

Relationship = (60 seconds / 1 unit)

10 minutes × (60 seconds / 1 minute)

Minute cancels out :

10 × 60 seconds = 600 seconds

Learn more : https://brainly.com/question/13156854

Question 8
1 pts
Solve the problem.
Paul has grades of 68 and 90 on his first two tests. What must he score on his third test in
order to have an average of at least 70?
at most 70
O at least 52
at most 76
O at least 79

Answers

Answer:

At least 52

Step-by-step explanation:

Paul's current average is a 79. It wouldn't be any of the "at most" answers because the question is looking for an average of "at least" 70. And "at least 79" wouldn't be correct because he could get much less than a 79 and still have an overall average of 70. The answer is at least 52. Hope this helps! Good luck.

The chord of a circle of radius 6 ft is 8 ft long . find the distance if the chord from the center.​

Answers

Referring to attached figure :

given values : -

radius of the circle = 6 ft

measure of chord = 8 ft (AB)

construction : -

I actually draw a perpendicular on chord from the centre, and we know that the perpendicular from centre on it bisects the given chord, therefore measure of

AC = BC = 1/2 × AB

AC = BC = 4 ft

now, let's apply Pythagoras theorem for triangle OCB,

we get :

OC² + CB² = OB²

OC² + 4² = 6²

OC² + 16 = 36

OC² = 36 - 16

OC² = 20

OC = [tex] \sqrt{20} [/tex] ft

OC = [tex] 2\sqrt{5} [/tex] ft

And here OC is the distance of chord from its center, therefore required answer is [tex] 2\sqrt{5} [/tex]

[tex] \: \: \: \: \: \: \: \: \: \: \: \: \: \: \boxed{ \boxed{ \: \: \: TeeNForeveR \: \: \: }}[/tex]

Compare: (i) −2/ 5 and −1 /5 (ii) −5/ 7 and −3 /7 (iii) 2 /9 and −5 /11

Answers

Answer:

(i) −2/ 5 < −1 /5  since -2 < -1 and denominators are same(ii) −5/ 7 < −3 /7  since -5 < -3 and denominators are same(iii) 2 /9 > −5 /11  as comparing negative and positive numbers

Step-by-step explanation:

-2/5 and -1/5

Since -1 > -2

So, -2/5 < -1/5

(ii) -5/7 and -3/7

Since -5 < -3

So, -5/7 < -3/7

(iii)

2/9 and -5/11

Note :- That all positive fraction are greater than negative fraction.

So, 2/9 > -5/11

**PLEASE ANSWER THE QUESTION BELOW.**
WILL MARK BRAINLIEST IF YOUR ANSWER IS CORRECT, RELIABLE, AND GOOD. PLEASE ADD DECIMALS, THANK YOU!
Please look at the picture provided below.
NO LINKS OR FALSE ANSWERS.

Answers

Answer:

80.5 km/h

Step-by-step explanation:

divide the 426.65 by 5.3 hours to get 80.5/1 hr

Find the equation of the lines perpendicular and parallel to 2x-3y=8 line through the point (-2,-4)

Answers

Answer:

y= -1.5x-7 is the equation of the perpendicular line

Here's why:

when we convert 2x-3y=8 to standard form, we get y= 2/3x-8/3. This means the perpendicular line will have a slope of the negative reciprocal of the original one, so the perpendicular slope is -1.5. When we substitute the points (-2,-4) into the equation y=-1.5x+b, we get a b value of -7. So the perpendicular line equation is y= -1.5x-7. You can't the parallel line equation with the points (-2,-4) as it is part of the line 2x-3y=8.

cos 20°cos40°cos60°cos50°=1/16
can you please tell me is the equation is correct or not
or please answer with complete explanation and tell me what will come on R.H.S if the equation is incorrect.​

Answers

Answer:

The value of cos cos 60+ 6 cos 40+ 15 cos 20 + 10 is equal to cos 50+5 cos 30 + 10 6 (Step-by-step explanation:

I kind of understand this question, but I'm not sure how to answer it directly, can someone help please.

Answers

so here we use the pythagorean theorem which is a2 + b2 = c2 (“a” squared times “b” squared equals “c” squared) the length from calvins house to the intersection is “a” and the length from phoebes house to the intersection is “b” so in order to find out the length of “c” (calvins house to phoebes house) we need to use the pythagorean theorem

a2 275x275=75,625

b2 113x113 = 12,769

so now that we have figured out what a2 and b2 are let’s add them

75,625 + 12,769 = 88,394

now since we only need to find out the length and not the area we need to find the square root of 88,394

the square root of 88,394 is 297.311 (i cut off the decimal after three places)

the direct length from phoebes house to calvins is 297.311 meters

In the standard (x, y) coordinate plane, what is the distance between the points (2, -10) and (-3,5) ? ​

Answers

Answer:

5√10, answer C

Step-by-step explanation:

You can use Pythagoras for this.

calculate the distance between the x coordinates (Δx), which is done by taking the biggest number and subtracting the the coordinates from each other. Aka 2 - - 3 = 2 + 3 = 5

Δy = 5 - - 10 = 15

then a^2 + b^2 = c^2 gives

5^2 + 15^2 = 250

c = √250

Then you still have to simplify. This is done by extracting the root out which results in an integer (a whole number), which is in this case 25.

√250 = √25 * √10 = 5√10, so answer C

will give brainliest !!!!!!

Answers

Answer:

(3, 4)

Step-by-step explanation:

Answer:

y = mx + 3

m = Δy/Δx = -3/3 = -1

y = -1x+3

Step-by-step explanation:

Help and hurry! Fastest and correct answer gets brainlesst.
No explanation needed
.
Here is a sketch of Noah's bedroom.
He wants to create a scale drawing of his bedroom to show to his designer.
He uses a scale of 1 m = 6 cm to draw his scale drawing.
He draws a 33 cm line to represent wall D.
What is the actual length of wall D according to the above mentioned scale?

Answers

Answer:

5.5 m

Step-by-step explanation:

1m = 6cm

x = 33 cm

x = 33 /6

= 5.5 m

What's the volume of the following is rectangular prism plsssssss will mark brainlist HELPPPP

Answers

Answer: 6.75 or 6 3/4

Step-by-step explanation: 3 3/8 x 2 = 6.75 Brainliest please?

Find the degree of 2b^9c^5

Answers

[tex] \large \mathfrak{Solution : }[/tex]

Degree of a polynomial is the highest exponential power in the expression.

i.e 9 here

so, degree of the given expression is 9

PLEASEE HELPPPPP
❤️❤️❤️❤️

Answers

Answer:

15

Step-by-step explanation:

(2x-1)+(x+17)+(4x-15)=106º

2x+x+4x=7x

-1+17-15=1

7x+1=106º

         -1

7x=105º

/7     /7

x= 15

joan has 72 blue and 27 green marbles Benny has 3 times more blue marbles than Joan how many dozen marbles does Benny have​

Answers

72x3=216
216/12=18 dozen

what is the answer to this question.

Answers

Answer:

Step-by-step explanation:

A proportional relationship is one that starts at (0,0) and is usually a straight line relationship.

Of those choices offered, only a is correct by this definition.

6. Andrew is planning on taking a vacation to Santorini, Greece which will cost $5,000. He makes $2900 ser
month. His fixed expenses are $1200 each month. He spends $200 on food and 5% of his monthly salary on
entertainment. How many months will it take to save enough for Andrew to go to Santorini, Greece

Answers

Answer: 3 months

Step-by-step explanation:

Answer:

3 1/2 months (Someone please check my math)

Step-by-step explanation:

We can set up this problem by making an equation.

(2900-1200-200-5%)(x)=5000

(1500-5%)(x)=5000

(1425)(x)=5000

5000 divided by 1425 equals 3.50...

My answer would be 3 1/2 months but I could be wrong.

A serving of walnuts is 1/2 of a cup. How many servings are there in a 1 1/2-cup bag of
walnuts?

Answers

Answer:

3

Step-by-step explanation:

1/2 a cup makes one serving in 1 1/2 a cup there are 3 servings

Write an exponential model given the two points (8,150) and (9,220).

Answers

Answer:

Step-by-step explanation:

The exponential model for the given points is y = 6.88(1.47)ˣ

What is exponential function?

In mathematics, an exponential function is a function of form f (x) = aˣ, where “x” is a variable and “a” is a constant which is called the base of the function and it should be greater than 0.

Given,

points are (8,150) and (9,220)

Exponential function,

y = abˣ            --------(A)

for point (8 , 150)

150 = ab⁸    -------(1)

for point (9 , 220)

220 = ab⁹    -------(2)

Dividing equation (2) by equation (1)

220/150 = ab⁹/ab⁸

Simplifying

1.47 = b

Substituting value of b in equation (1)

150 = a(1.47)⁸

150 = a(21.80)

a = 150/21.80

a = 6.88

Substituting value of a and b in equation(A)

y = 6.88(1.47)ˣ

Hence, y = 6.88(1.47)ˣ is the exponential model for given points.

Learn more about exponential function here:

https://brainly.com/question/2456547

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It costs n dollars to make a dozen bicycles. At the same rate, how many dollars will it cost to make 30 bicycles?

Answers

Step-by-step explanation:

n dollars for 12 bicycles.

what is the factor to go from 12 to 30 ?

12×f = 30

f = 30/12 = 5/2

as it will be the same rate, if will cost 5n/2 dollars

1^2 + 2^2 + 3^2 +.... + 28^2 + 29^2 + 30^2 = ......
Find the value
Thank you!

Answers

Step-by-step explanation:

The sum of consecutive squares is

[tex]1^2+2^2+\dots+n^2=\frac16n(n+1)(2n+1)[/tex]

Therefore

[tex]1^2+2^2+\dots+30^2=\frac16(30)(31+1)(2\cdot30+1) = 9455[/tex]

Add. −14 + (−7) Enter your answer in the box.

Answers

Answer:

-21

Step-by-step explanation:

add the numbers -14 and -7 to get -21

Hey there!

Answer:

- 21

Step-by-step explanation:

[tex] - 14 + ( - 7) \\ \\ - 14 - 7 \\ \\ - 21[/tex]

Hope it help you

Jace buys 12 bottles of orange juice at the corner store for a total cost of $8.04. If each bottle costs the same amount, how much is each bottle of juice?

Answers

$0.67 for each bottle of juice

O.67 per orangw juice

Solve the equation M2= 14

Answers

Answer:

7

Step-by-step explanation:

M2=14

divide both sides by 2

M2÷2=14÷2

M=7

WILL GET MARKED THE BRAINIEST
Which logic statement represents this argument?

If it’s a weekend, I exercise. It’s not a weekend. So, I won’t exercise.

Assume that p represents “It’s a weekend” and q represents “I exercise.”

A.
(p q) p
B.
[(p q) p] q
C.
[(p q) p] q
D.
[(p q) p] q

Answers

Hey the signs are not showing if you write the signs I’ll answer it in the comments :))

solve the systems of linear equations using substitution
1.x-4y=-10 2.a-3b=24
2x+y=-11 a+2b=-16



3.4j-5k=27 4.m+n=-3
k=j-7 m-4n=27

Answers

Step-by-step explanation:

1 . x - 4y = -10

2x + y = -11

multiply the first equation with 2

2x - 8y = -20

-

2x + y = -11

===============

= 0 - 9y = -9

y = 1

x = -6

-------------------------------------------

2.

a - 3b = 24

-

a + 2b = -16

=============

= 0- 5b = 40

b = - 8

a = 0

and so on

An elite runner's stride rate is currently 168 strides per minute (the number of steps she takes
per minute). She wants to improve her stride rate to 180, and believes that through training, she
can increase her stride rate by 2 strides per minute each day, d. Which equation best models the
situation?

Answers

Answer:168+2d= 180

Step-by-step explanation:

Answer:

Step-by-step explanation: 168 +2d=180

If x=[(2/3)²]³ ×(1/3)⁻² ×3⁻¹ ×(1/6) find the reciprocal of x.

Answers

Answer:

I don't know itachi bro.You can ask your friend sorry I can't help you.I am in class 7 lol hahahahah

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